How Clouds Form

Although we take water for granted, it is really a very special substance that exists on Earth in three natural was in three quite different forms-liquid, solid ice and invisible gas. It is always around us, or present in the air,the warmer the air is the more water vapor it can hold. You know when you breathe out on a cold day and a small cloud is in front of you well that cloud is made of millions of tiny water droplets. They have condensed or turned from invisible gas into droplets of liquid, because the cold air could not hold all the water vapor.

Clouds in the sky form in just the same way. As long as the air can cope with the water vapor in it, the sky remains clear. But when the air is saturated or holding as much water as it can at that temperature, any extra moisture will condense into droplets- and clouds will form. There are 4 major cloud kinds the Cumulus, the Cumulonimbus, the Stratus and the Nimbostratus.